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1.

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.

2.

Perform checking procedure as follows.

(1)

Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

(2)

Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.

note

Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. ( after checking, reconnect the pin at correct position. )

3.

Is the problem found?

YES

a.

Repair the trouble causing part and go to "Verification of Vehicle Repair".

NO

a.

With M/T : Go to "Power Circuit Inspection".

With A/T : Go to "Signal Circuit Inspection".

1.

Check power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect Vehicle Speed Sensor connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of VSS connector terminal 2.

1)

Secification : 11.5V~13.0V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Signal Circuit Inspection".

NO

a.

Repair E/R JUNCTION BOX 10A SUSR.2 FUSE and related circuit, and go to "Verification of Vehicle Repair".

1.

Check signal circuit voltage at sensor side

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect VSS connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of VSS connector termianl 3.

1)

Specification : 8.0V~11.5V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "2.Check open in signal circuit at ECM side".

NO

a.

Repair poor connection or open circuit and go to "Verification of Vehicle Repair".

2.

Check open in signal circuit at ECM side

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect VSS connector and ECM connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of ECM connector(CUD-K) terminal 75.

1)

Specification : 8.0V~11.5V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Ground Circuit Inspection".

NO

a.

Repair poor connection or open in ECM connector (CUD-K) terminal 75 related circuit and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect VSS connector.

3.

IG KEY "ON".

4.

Measure the voltage of VSS connector terminal 3. [ TEST "A" ]

5.

Measure the voltage between VSS connector terminal 3 and 1. [ TEST "B" ]

( terminal 3 : Check + prove , terminal 1 : Check - prove )

1)

Specification : [TEST "A"] Voltage - [TEST "B"] Voltage = below 200mV

6.

Is the measured voltage within the specification?

YES

a.

Go to "Component Inspection".

NO

a.

When "B" voltage is not detected : Repair open in ground circuit and go to "Verification of Vehicle Repair".

b.

When the voltage difference between "A" and "B" is above 200mV : Eliminate the causes of excessive resistance and go to "Verification of Vehicle Repair".